ATEN US421A User Manual page 12

Manual Operation – Pushbutton
Note: Manual operation and the software-based configuration
utility operate independently; commands from one will not
override the other.
US221
A
To toggle the USB peripheral focus between the two computers,
press the port selection pushbutton (located on the top of the
unit). The selected port LED flashes and the unit beeps. When
the flashing stops and the LED becomes steady (in about four
seconds), that port has the peripheral focus.
US421
A
To switch the peripheral focus to another port, press the
pushbutton that corresponds to that port. The selected port LED
flashes and the unit beeps. When the flashing stops and the LED
becomes steady (in about four seconds), that port has the
peripheral focus.
Lock/Unlock Peripheral Focus
To lock the peripheral focus on a certain computer, press and
hold the pushbutton that corresponds to that port for two
seconds, or until the orange LED lights up.
To unlock the peripheral focus, press and hold the pushbutton
that corresponds to that port for one second, or until the orange
LED turns off.
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